Any one have any info on how often european guys will play in the states. Poulter Casey etc.. Also does anyone have a link to medical extensions or guys using career money exemptions
I would say that they are likely to play less as a whole in the States than in previous years because of the Race to Dubai. You should see a number of them still play on the PGA Tour between February and April when the European Tour travels the globe, but I think less of them will be asking for sponsors' invites after that other than the week before a Major or WGC event.
In terms of medical extensions/exemptions, the list can be found at
http://www.pgatour.com/players/pgatour-exempt. However, it was at least two weeks into the season last year before it was updated for 2008, so it may be a while before it is updated for this year.